ebrary, Inc, Zink, C., & Pschyrembel, W. (1988). Dictionary of obstetrics and gynecology. W. De Gruyter.
芝加哥风格引文ebrary, Inc, Christoph Zink, 与 Willibald Pschyrembel. Dictionary of Obstetrics and Gynecology. Berlin ; New York: W. De Gruyter, 1988.
MLA引文ebrary, Inc, et al. Dictionary of Obstetrics and Gynecology. W. De Gruyter, 1988.
警告：这些引文格式不一定是100％准确.